00394nam a22001097a 4500040001000000082001200010100006200022110006700084245007400151260004400225650001500269  cNUST   a220 PRO  aMuaaz ul Hassan Hafiz Muhammad Jawad Syed Jawad Ali Shah   aSupervisor Dr Hamid Jabbar Muaaz ul Hassan LE Hafiz Umar Aslam  aPR-SOF-2315-Commercial Piezoelectric Buzzer, Design and Manufacturing  aISLAMABAD:bNUST COLLEGE OF EME,c2023.  aDE-MTS-41